Refining apparatus



Sept. 28, 1954 D. E. JONES ET AL REFINING APPARATUS 5 Sheets-Sheet 1Filed Sept. 18, 1952 IIIVVIEY'NTOR,

p 8, 1954 D. E. JONES ET AL 2,690,098

REFINING APPARATUS Filed p 1 1952 5 Sheets-Sheet 2 M MW/1i.

Sept. 28, 1954 D. E. JONES ET AL REFINING APPARATUS 5 Sheets-Sheet 5Filed Sept. 18, 1952 p 8, 1954 D. E. .JONES ET AL 2,690,098

REFINING APPARATUS Filed Sept. 18, 1952 5 sheets srieet 5 IN V EN TOR. 225% 22a BYZWfiWsY/J Z... r B1,

Patented Sept. 28, 1954 Dwight .E. Jones and. Ed

Pit'tsfield, Mass,, assignors to ward H. Oumpston, .Jr...

E. D. Jones. &

Sons Company,pPittsfield, Mass a, corporation of MassachusettsApplicationseptember 18, 1952, Serial No. 310,288

'12 Claims.

.to improvements in .re-

'for refining or treating like for paper-making invention relates'fining apparatus adapted cellulose fibers .and the and other purposes.

'The machine of the invention is adapted for use other than for refiningpaper-making fibers fining paper-making materials.

The apparatus is of the so-called double disc type where a rotatabledisc is disposed between non-"rotatable discs with blading .on adjacentfaces of the discs for the refining action. Stock is not necessarilypiunped through the machine discs but rather by external means AmongImportant objects of the invention is the -provision of a machine whichis relatively short in "length so as "to occupy less space than formermachines while at the same time the novel construction provides arefining greatly in excess of prior art machines having refining discsofthesame diameter.

As one feature 'of-theinvention, the mechanism for the relative machineto obviate such distortion and the frame and machine components as wouldimpair the operation "of the machine.

As other features-of the invention, the "machine uniformly appliedduring the refining operation. Gth'er novel features reside in theability of the machine to be constantly worked under'pressure so astoobviate'the picking up "of airwhich is common 'to other machineshaving a discharge free to atmosphere.

The machine As anot-her feature off the invention, a-noutermost refiningdisc is fixed, the rotatable disc is adjustable towards and awaytherefrom and another non-rotatable inner disc is adjustable towards andaway from the rotatable disc. This bed by novel screw means forsimultaneously adjusting the rotatable disc and the inner non-rotatabledisc which is arranged and adapted to establish and maintain apredetermined relationship between the rotatable and non-rotatablediscs.

As a still further novel feature of the invention, the working load iscarried entirely within the machine structure which is unitary incharacter to avoid plural connected together components on separatesupports which could result in misalignment and the like.

The components of the machine are constructed and arranged and connectedtogether in such a manner that in initial assembly the utmost accuracyin alignment and relationship of the components is established andmaintained.

Other various and numerous objects and advantages'will be observed fromthe following description of "the machine of the invention in the format present preferred.

All of the above objects we accomplish by means of such structure andrelative arrangements of parts thereof, as will fully appear by aperusal of the description below and by various specific features whichwill be hereinafter set forth.

.To the above cited and other ends and with the foregoing and variousother novel features and advantages and other objects of our inventionas will become more readily apparent as the description proceeds, theinvention consists in certain novel features of construction and in .thecombination and arrangement of parts as will be hereinafter moreparticularly pointed out in the claims hereunto annexed scribed andreferred to in accompanying drawings wherein:

Fig. 1 is a side elevational view of a refining machine embodying thenovel features of the invention;

Fig. :2 is a plan view of the machine shown in Fig. 1 with parts insection for clearness;

Fig. '3 is a longitudinal sectional elevational view through the machineshown in Figs. 1 and 2, and taken on the longitudinal center linethereof;

Fig. 4 is a side elevational View showing coupling means for couplingthe main shaft of the machine to drive means;

Fig. 5 is an end elevational view of the rear end of the machine shownin Figs. 1 and 2;

Fig. 5A is an elevational View of a coupling of the wormshafts of themachine;

Fig. 6 is a small scale elevational view of the rear side of the innernon-rotatable disc;

Fig. 7 is an elevational view of the front or delivery end of themachine shown in Figs. 1 and 2; and

Fig. 8 is a diagrammatic View, at small scale, of the operatingconnections of the adjusting mechanism.

Referring now to the drawings more in detail the invention will be fullydescribed.

A frame or housing indicated generally by 2 which supports thecomponents of the machine includes side walls 4, end walls 6 and otherportions to be referred to as the description proceeds.

An elongated hollow quill 8 is provided which is slidable back and forthwithin a tubular portion I4 of the frame, see Fig. 3. A bearing I2 isprovided in which the quill at its rear portion is slidable and heldagainst rotation by means of a key I4. The forward end of the quill isguided for Sliding movements in a bearing portion I6 of the frame.

A main shaft i8 is supported for rotation within the quill by spacedanti-friction bearings 20 and 22. The forward end of the quill 8 issealed to the shaft i8 by means of interfitting parts 24, 28 and 28.

A forward part 2I of the shaft I8 is sheathed by a tubular member 38,and a flange or header 32 is provided on the forward end of said shaftpart 2I. A disc carrier 34 is secured to the forward face of member 32as by screws or bolts 36. This is a rotatable carrier for refiningdiscs.

A forward cylindrical part 38 of the frame is provided with acylindrical lining 48 and an end head 42 is secured to the cylindricalforward end portion 38 of the frame and is provided with a dischargeopening 44 for refined stock.

A tubular inlet 48 is provided in the upper part of the housing forstock to be refined and may be connected to any form of piping systemdesired. Similarly the outlet 44 may be connected to a piping system.

A reciprocable disc carrier 48 is reciprocable back and forth in thelining 48 and has an upper inlet opening 58 and a central opening 52,see Fig. 6. Packing means 54 around the periphery of the carrier at theforward end thereof seals the carrier in the lining 40 for slidingmovements.

The inlet 48 is slidably received in the upper inlet opening 50 ofmember 48 and a gland 56 and packing means 58 shown in Fig. 3 isprovided for sealing purposes as the carrier 48 slides back and forthrelative to inlet 46.

A stuffing box housing 68 is secured to the carrier 48 around theopening 52 thereof and includes a gland 62 and packing means 84 to sealthe sheath 38 for relative movements of the shaft part 2I relative tomember 48.

A coupling housing 68 is secured to the rear end of the quill 8 and istubular in form, see Fig. 3. A male coupling member 68 is fixed to theouter end 23 of the main shaft I8 and has a periphery in the form of anexternal gear I0. A key 12 fixes the member 68 against rotation on theshaft end 23.

A tubular female member teeth 82 for meshing with the 68, see Fig. 4.

A tubular member 88 is bolted to the member 80 and has an end plate 88bolted thereto. Said member 88 is provided with internal teeth, withwhich a coupling member 82 is in mesh. The member 92 may be fixed to theshaft 94 of a motor, not shown. The teeth 82 of the member 84 80 isprovided with teeth 18 of member are elongated to permit longitudinalmovements of member 88 as the quill 8 is moved longitudinally and thecoupling arrangement is such that there are no undue strains imparted tothe quill due to slight misalignment of the shaft 84 and quill.

An annulus I4 has pairs of relatively converging arms I6 fixed theretoas by welding indicated by 18 and said annulus is bolted to member 88,as shown.

As will be observed, the shaft i8 and quill 8 are relatively adjustablelongitudinally while the said shaft is rotatable. The quill isnon-rotatable, of course, by reason of key I4.

The front end member 42 on its inner rear side, the member 48 on itsforward side and member 34 on forward and rear sides have refining discsI08, I82, I84 and I06 secured thereto. The shaft I8 and quill 8 arelongitudinally adjustable as already described for positioning theadjacent faces of the cooperating refining discs in predeterminedrelationship.

Adjacent cooperating faces of the refining discs will be formed withblading or cutter bars of the desired form well known in the prior artand as an example such as shown in U. S. Patent No. 539,704 of May 21,1895.

Means for simultaneously reciprocating the quill 8 and shaft I8 andthereby the refining disc carrier 34 and disc carrier 48 for relativeadjustment of the refining discs will now be described.

Posts such as H8 disposed at opposite sides of the shaft I8 and quillare reciprocable in the frame and are similar in construction.Relatively diverging arms I I2 extend from the forward ends of saidposts I I0 and have outer ends secured to the rear side of the disccarrier 48 by bolts or the like represented by II4, as best shown inFig. 6.

The points of attachment of the arms H2 and carrier 48 are distributedabout the periphery of the member 48 so that as the posts are urgedforwardly, pressure is distributed over the said member 48. By means ofmachining or shimming between the arms and member 48 the forward faceand refining discs may be accurately related to cooperating components.

The construction related to one of the posts will be described. The rearend of the post I I0 is slidably guided in the rear end of the housingat I I8 and is hollowed out as shown to receive an internally threadednut which is fixed to the end of the post, see Fig. 2.

A primary screw I28 is in threaded engagement with a nut II8. A thrustcollar I22 thereof is disposed between a washer I24 and an antifrictionbearing I28 held in the frame by a cap I28 secured thereto. The nut H8is secured to the end of the post as by bolts or the like.

A cylindrical housing part I30 extends rearwardly from the main housingand a worm gear I32 disposed therein is fixed to a rear part I2I of thescrew I28 and held against rotation by a key I34.

A cover I36 is fixed to the housing part I38 and sealing means isprovided around the worm gear hub, as shown.

As the screw I20 is rotated in one direction or the other, the post H8is moved thereby in one direction or the other so that the working facesof the discs I88 and I04 may be adjusted to predetermined relationship.

It will be understood that there are two posts such as H8 and duplicatemechanism for the posts at opposite sides of the main shaft and quill.

The members 16 previously ireierred sto which divergezfromtherannulus-14 :aresecured at outer endsztwsplitbands1M0. tsaidabands ilflzembracea housing 5M2 which has forward :and :rear walls 44:4 and 14,6securedrthereto as :by welding or in any desired manner.

A secondary :screw 1-48 ,is in threaded engage- .ment "with the ;-rearend 42.! of screw 12B and has an outer portion in abutment with a:springseat I50 in the housing I42.

A reduced portion Hi2 .of *therscrew 1.48 extends through spring :seat150 and an outer similar seat in .the housing :and thas a nut 1:56 -against the outer spring seat. spring .158 iisidisposed around the screwv:part 1.52 :between the :spring seats, :as :shown.

A key 1| 45 of screw part M18 zine-housing end M4 prevents zrel-ativerotation aof screw .148 and the housing. r

Asxpreviously stated, .rotatiomof :the worm gear 132 brings:about-endwise movement of the most With the :band 140 embracing thehousing 442,, theirotation of screw i120 =by worm :gear 432 brings about:endwise movement of screw M8. Said :screw 1148 .im threaded engagementwith :Said housing M2 being connected to the gannulus :74 through armsat (and athezannulus being connected ;to the .quill rthrough iii-G, :the:quil-l is moved by movement of screw M8.

FIlhus rby ;rotation of the worms v["32 :the :posts and :quill .in whichshaft 218 is v'rotatalole :are simulta-neously moved longitudinally.

The pitch and :hand {f the screws 1'23) :and 148 are arranged andadapted so that the quill .is moved through :alesseridistance rthanitheposts Mil :for-the following reason. =With reference to Fig. 3, assumethat the working :faces :of discs mo and #04 are ;a certain 'distanceapartand ithe working faces of discs H22 and llzfifiware :the same(distance apart.

With this :spacing in mind, .:ass ume:it:.is desired atoibring theadjacent Working facesof ';the :discs 'into :closer relationship or into:contact. This isnccomplishedmmthe arrangementzofithescrews A which :issuch that .pthe (quill is moved through one-half :the distance :of the:posts.

in other words, itherscrewr rrangementis such that :the members :34 and:48 are moved ito rbring :the :discs at opposite :sides predeterminedrelationship.

"Theworm gear 4'32 ShOWII iHFigJZ and the :one for rthe post :at :the.other side :of zt-he s-machine :are operated simultaneously lbymechanism :now to the described. "Worm shafts 1'60 and lfimarerotatabley inihous- 'ings 1264 .and N6 disposed below the 'hous'ings 130:and have worm-s i158 and 110 fixed thereto which mesh with the wormWheels I32.

"Said shafts 1 "60 :and 462 are :connected by a coupling indicated by 17-2 which willbedescribed with reference "to'Fig.

Gears HE are fixed to inner adjacent ends of shafts 1'60 and m2 "and arein mesh "with the internal teeth of an annular sleeve or 118.'I'hehousing l=18=is slidable'axially-fromoff The housing "is the gears41-6 by tie member 488 as shown.

:shaft 1;82 :is rotatable the :frame at .-a ide thereof and has ialhandwheel 1'84 fixed thereto of member :34 into 5 snap rings housing 5:outsideitherframe andzafsprocket ="t86lfixedathe1'eto inside of theframe. A shaft .188 rotatable in the frame has a sprocket I90 fixedtheretozwhich is .:connected :by -.ta lchain I192 to 1 the sprocketitBB.

Worm sshaft ztfifl extends into a housing 494 at an waterside :of :theiframe landihas :a sprocket L96 fixed :thereto which :is connected .by.a ;chain il'fiflitoia, sprocketmflifixed tosshaft [8.8. (Dhuszbyrotating hand wheel .484 rthe "worm wheels Z132 are simultaneouslyrotated :to bring about ssim taneoussmovementofthe:postsandrshaftrcarrying quill.

A clutch part 204 iis1fixed:to;shaft i588 and has a :sprocket 1206 fixedIthereto. A :clutch .part 3208 slidable and nonerotatableaon shaft 1.88isadapted ="to :releasably sengage :clutch part 204.

'Annotor M0 which :may :have the desired flow speed has a sprocket T21 4fixed :to the shaft 2 1-2 thereof which is :connected by a chain 2;; tothe sprocket 206 01 shaft Hi8. The motor 240 is secured to a base 2|8which in turn is secured by boltssuch as 220 to :a lower transverse walli222 :of t-the frame.

shifting :rod ,224 :is -.reciprocable in the frame and ;has :a, manuallyengagea'ble :member 226 outside the frame. A shifting for-k '228 fixeddo the :innerend 10f rod 22?; is in operative engage- :ment with the jaw:clutch part 206 for engaging said rpart with 'jaw Z04 and'disengagingthe same. With the .clutch v-parts in -engagement the worm shafts may besimultaneously rotated Icy the rmotor. Otherwise "said shafts may be:rotated by means of the hand wheel I34.

The split vbands M0 -around the housings I42 7 are adjusted :by means ofthe bolts shown to efrictionally embrace the housings in the desiredmanner.

:In iin'itially adjusting the relationship of the =refiningdiscs=or in'replacing-a disc or discs, the loosened. The discs are then through:outle't 414.

While the :quill and the :posts are adjustable simultaneously, :they arein effect yielding'ly con-- :nected through the springs #58 which may beset to yield under predetermined sload thus making'it possible for therotatingzdiscs intend 1434 'to be 'seIfQcentering zbetween stationaryrdiscs ton-and J02. .Alsosrhodld thereibe unequal-wear between one pairof discs as compared to ithe other, the self-centering can :take place:regardibearings.

I-Since the mechanism ifor .-simultaneously ad justing ethe :quill :andposts :axially includes yielding and frictionally (And assa *novelfeature of ithe mechanism, ithe springs .458 land the :bands 5M0 :maythe adjusted :so :as :to yield under various :predetermined :conditionsof pressure.

A duct 230 deformed :by walls 23 2 .and ;23l4 ha ling an \outlet 1236,see vFig. '3, :for (cleanout -.p urposes and aperture members 238 and240 are provided by which the apparatus may be transported.

It will be noted that the refining components are located at one end ofthe machine, such as the delivery end, and that the adjusting means islocated at the opposite end. This is important among which is the factany expansion of parts in the vicinity of the refining elements due toelevated temperatures may take place without distortion of the framegenerally and cause objectionable disturbance of the relationship ofcomponents.

An important feature relating to the assembly of the machine are thearms connecting the disc carrying member to the posts. An arm or armsmay be scraped or a shim or shims placed between the arms and carrier toobtain the utmost accuracy in locating the carrier transversely relativeto the longitudinal axis of the quill and shaft.

The invention may be embodied in other specific forms without departingfrom the essential characteristics thereof. Hence, the presentembodiments are therefore to be considered in all respects merely asbeing illustrative and not as being restrictive, the scope of theinvention being indicated by the appended claims rather than by theforegoing description, and all modifications and variations as fallwithin the meaning and purview and range of equivalency of the appendedclaims are therefore intended to be embraced therein.

What it is desired to claim and secure by Letters Patent of the UnitedStates is:

l. Refining apparatus of the double disc type comprising in combination,a support construction having an open forward end closed by an endmember, a quill reciprocable in said support having a shaft rotatableand non-reciprocable therein which is provided with a forward disccarrier adjacent said end member, a rear disc carrier reciprocable insaid support rearwardly of said forward carrier, refining discs onforward and rear faces of the forward disc carrier and refining discscooperating therewith on the rear side of the end member and forwardside of the rear disc carrier, elongated posts reciprocable in saidsupport construction having longitudinal axes disposed in parallelismwith and spaced at opposite sides from the longitudinal axis of saidquill and shaft, means extending from the forward end of each of saidposts having outer ends secured at circumferentially spaced points tothe rear side of said rear carrier, and means for simultaneouslyreciprocating said quill and posts through predetermined relativedistances disposed at the rear end of said support construction.

2. Refining apparatus of the double disc type comprising in combination,a support construction having an open forward end closed by an endmember, a quill reciprocable in said support having a shaft rotatableand non-reciprocable therein which is provided with a forward disccarrier adjacent said end member, a rear disc carrier reciprocable insaid support rearwardly of said forward carrier, refining discs onforward and rear faces of the forward disc carrier and refining discscooperating therewith on the rear side of the end member and forwardside of the rear disc carrier, elongated posts reciprocable in saidsupport construction having longitudinal axes disposed in parallelismwith and spaced at opposite sides from the longitudinal axis of saidquill and shaft, means extending from forward ends of said posts havingouter ends secured at circumferentially spaced points to the rear sideof said rear carrier, and means for simultaneously reciprocating saidquill and posts through predetermined relative distances disposed at therear end of said support construction, said means yieldingly connectingsaid posts and quill adapted to yield under predetermined conditions ofend thrust.

3. Refining apparatus of the double disc type comprising in combination,a support construction having an open forward end closed by an endmember, a ull reciprocable in said support having a shaft rotatable andnon-reciprocable therein which is provided with a forward disc carrieradjacent said end member, a rear disc carrier reciprocable in saidsupport rearwardly of said forward carrier, refining discs on forwardand rear faces of the forward disc carrier and refining discscooperating therewith on the rear side of the end member and forwardside of the rear disc carrier, elongated posts reciprocable in saidsupport construction having longitudinal axes disposed in parallelismwith and spaced at opposite sides from the longitudinal axis of saidquill and shaft, means extending from forward ends of said posts havingouter ends secured at circumferentially spaced points to the rear sideof said rear carrier, and means for simultaneously reciprocating saidquill and posts through predetermined relative distances disposed at therear end of said support construction, said rear disc carrier providedwith an opening therethrough for material to pass to said refining discsand said support and rear disc carrier provided with sealed telescopingconnections in communication with said opening.

4. Refining apparatus comprising in combination, a supportin structurehaving a cylindrical chamber at a delivery end thereof closed by an endmember having an outlet, a refining disc carrier inwardly of said endmember rotatable in the chamber, a second disc carrier inwardly of saidfirst-named carrier reciprocable in the chamber, cooperating refiningdiscs carried on adjacent faces of said end member and carriers,operating means inwardly of said first-named carrier mounted in saidsupporting structure for reciprocation and rotation of said carrier,other operating means rearwardly of said second carrier in saidsupporting structure for non-rotative reciprocation thereof relative tothe first-named carrier, and adjusting mechanism at an opposite end ofsaid supporting structure operatively connecting both said operatingmeans, and other means for simultaneous reciprocation of said operatingmeans through predetermined relative distances.

5. Refining apparatus comprising in combination, a supporting structurehaving a cylindrical chamber at a delivery end thereof closed by an endmember having an outlet, a refining disc carrier inwardly of said endmember rotatable in the chamber, a second disc carrier inwardly of saidfirst-named carrier reciprocable in the chamber, cooperating refiningdiscs carried on adjacent faces of said end member and carriers,operating means inwardly of said first-named carrier mounted in saidsupporting structure for reciprocation and rotation of said carrier,other operating means rearwardly of said second carrier in saidsupporting structure for non-rotative reciprocation thereof relative tothe first-named carrier, and adjusting mechanism at an opposite end ofsaid supporting structure operatively connecting both said operatingmeans, and other means for simultaneous reciprocation of said operatinmeans through predetermined relative distances including yieldable meansadapted to permit relative axial movements of the said operating meansunder predetermined conditions of axial pressure.

6. Refining apparatus comprising in combination, a supporting structurehaving a cylindrical chamber at a delivery end thereof closed by an endmember having an outlet, a refining disc carrier inwardly of said endmember rotatable in said chamber, a second disc carrier inwardly of saidfirst-named carrier reciprocabl in said chamber, cooperating refiningdiscs carried on adjacent faces of said end member and carriers,operating means inwardly of said first-named carrier mounted in saidsupporting structure for reciprocation and rotation of said carrier,other operating means rearwardl of said second carrier in saidsupporting structure for non-rotative reciprocation thereof relative tothe first-named carrier, and adjusting mechanism at an opposite end ofsaid supporting structure operatively connecting both said operatingmeans and other means for simultaneous reciprocation of said operatingmeans through predetermined relative distances, said supportingstructure provided with a stock inlet intermediate opposite ends thereofand said second carrier provided with an opening therethrough withconnections between said inlet and openings in all positions of the saidcarrier relative to the supporting structure.

7. Apparatus according to claim 4 wherein the means for reciprocatingand rotating the second named carrier includes an elongated quillreciprocable and non-rotatable in the supporting structure having ashaft rotatable therein to the forward end of which said first-namedcarrier is secured.

8. Apparatus according to claim 4 wherein the means for reciprocatingand rotating the secondnamed carrier includes an elongated quillreciprocable and non-rotatable in the supporting structure having ashaft rotatable therein to which said first-named carrier is secured,and said other operating means includes posts at opposite sides of andin parallelism with said quill reciprocable in said supporting structurehaving forward ends connected to the second carrier by arms extendingbetween said posts and carrier.

9. Refining apparatus comprising in combination, a supporting structurehaving a, forward end provided with a chamber closed by an end memberhaving an outlet, a rotatable and reciprocable disc carrier inwardly ofsaid end member and a reciprocable non-rotatable disc carrier inwardlyof said first-named carrier, cooperating refining disc on adjacent facesof said end member and carriers, a quill rearwardly of the firstnamedcarrier reciprocable in said supporting structure having a shaftrotatable therein supporting said carrier, a pair of posts parallel toand at opposite sides 01' said quill reciprocable in said supportingstructure supporting said second-named carrier on forward ends thereof,primary screw members threadedly and axially engaging rear ends of saidposts, and means holding said screw members against axial movementrelative to said supporting structure, secondary screw membersthreadedly and axially engaging rear ends of the first-named screwmembers, operating means for simultaneously rotating said primary screwmembers for reciprocating said posts, connections between said secondaryscrew members and quill holding said screws against rotation arrangedwhereby the quill is reciprocated simultaneously with the posts, saidprimary and secondary screw members so arranged that in all positions ofthe disc carriers the distance between them and the distance between thefirst-named carrier and end member are equal.

10. Refining apparatus set forth in claim 9 wherein the operating meansincludes intermeshing gearing fixed to the primary screws and toseparate rotatable shafts which are operatively connected by adjustablecoupling means.

11. Refining apparatus comprising in combination, a supporting structurehaving a rear end and a forward end provided with a chamber closed by anend member having an outlet, a rotatabl and reciprocable disc carrierinwardly of said end member and a reciprocable nonrotatable disc carrierinwardly of said first-named carrier, cooperating refining disc onadjacent faces of said end member and carriers, a quill rearwardly ofthe first-named carrier reciprocable in said supporting structure havinga shaft rotatable therein supporting said carrier, a pair of postsparallel to at opposite sides of said quill reciprocable in saidsupporting structure supporting said second-named carrier on forwardends thereof, primary screw members threadedly and axially engaging rearends of said posts, and means holding said screw members against axialmovement relative to said supporting structure, secondary screw membersthreadedly and axially engaging rear ends of the first-named screwmembers, operating means for simultaneously rotating said primary screwmembers for reciprocating said posts, housings held against rotation onouter end portions of said secondary screws and preloaded springs insaid housings held on the said portions of the screws between outerextremities and inner portions thereof, and rigid connections betweensaid housings and outer end of said quill, all adapted and arrangedwhereby the simultaneous reciprocation of the posts and quill iseffected through said springs.

12. Refining apparatus comprising in combination, a supporting structurehaving a cylindrical chamber at a delivery end thereof closed by an endmember having an outlet, a primary refining disc carrier inwardly of theend member rotatable in the chamber, a secondary disc carrier inwardlyof said primary carrier reciprocable in the chamber, cooperatingrefining discs carried on adjacent faces of the end member and saidprimary and secondary carriers, primary operating means disposedinwardly of said primary carrier for the reciprocation and rotationthereof, secondary operating means disposed rearwardly of said secondarycarrier for nonrotative reciprocation thereof relative to said primarycarrier, and adjusting mechanism operatively connecting said primary andsecondary operating means.

References Cited in the fileof this patent UNITED STATES PATENTS NumberName Date 1,002,698 J ohassen et al Sept. 5, 1911 1,346,277 Storrer July13, 1920 2,024,424 Bryson Dec. 17, 1935 FOREIGN PATENTS Number CountryDate 1,390 Great Britain of 1897

